Math professor tries Physics Olympiad!!

19:50
FUN Ecuadorian Math Olympiad Number Theory Problem

13:54
What flag is this??

17:30
une belle somme Ramanujan

12:39
which is larger??

12:59
I Rented A Helicopter To Settle A Physics Debate

18:54
POURQUOI L'ANGLE DROIT EST IL SI PUISSANT ?

18:38
A Simple Problem on the Hardest Physics Olympiad (IPhO)

18:49